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Operating Characteristics
Screen
•
Etched anti-glare screen
•
O.31mm dot mask
•
Displays 16 or 64 colors depending on the mode selected
User Controls
•
Brightness control affects the contribution of all input bits by
controlling the gain of the video stages. The display contains
a protection circuit which may overide this control.
•
Contrast control affects the contribution of the least
significant bits only. When pushed in, the contrast control is
rendered inoperative and contrast is determined by the
setting of the contrast default value adjustment on the rear of
the display. Pulling the contrast control knob out engages the
front contrast control.
•
V. Size 1 control controls the vertical size of the screen in
mode 1.
•
V. Size 2 control controls the vertical size of the screen in
mode 2.
Service Controls
•
Black level adjust control is adjusted to make the raster lines
just disappear when black input signal is supplied.
•
Contrast default value control is used to set the contrast
value when the front contrast control is pushed in. Normally
adjust for best brown color.
2 IBM Enhanced Color Display
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